Add User.get_login_url/0 to fetch KiteConnect login endpoint

Author: nitinstp23

config/config.exs

@@ -0,0 +1,7 @@
+# This file is responsible for configuring your application
+# and its dependencies with the aid of the Mix.Config module.
+use Mix.Config
+
+config :kite_connect_ex,
+  api_key: "api-key",
+  api_secret: "api-secret"

lib/kite_connect_ex/request.ex

@@ -16,6 +16,9 @@ defmodule KiteConnectEx.Request do
     recv_timeout: 5_000
   ]
 
+  @spec api_version() :: String.t()
+  def api_version, do: @api_version
+
   @spec get(String.t(), map() | nil, list, list) :: Response.success() | Response.error()
   def get(path, query, headers, opts \\ []) do
     HTTPoison.get(

lib/kite_connect_ex/user.ex

@@ -0,0 +1,30 @@
+defmodule KiteConnectEx.User do
+  @moduledoc """
+  Module to represent a user resource.
+
+  - [Docs](https://kite.trade/docs/connect/v3/user/)
+  """
+
+  alias KiteConnectEx.Request
+
+  @login_url "https://kite.zerodha.com/connect/login"
+
+  @doc """
+  Get KiteConnect login endpoint
+
+  ## Example
+
+    {:ok, url} = KiteConnectEx.User.get_login_url()
+  """
+  @spec get_login_url() :: {:ok, String.t()}
+  def get_login_url do
+    query = URI.encode_query(%{v: Request.api_version(), api_key: api_key()})
+    login_url = @login_url <> "?" <> query
+
+    {:ok, login_url}
+  end
+
+  defp api_key do
+    Application.get_env(:kite_connect_ex, :api_key)
+  end
+end